A soil sample taken from the informally named "Snow White" trench at
NASA's Phoenix Mars Lander work site produced minerals that indicate
evidence of past interaction between the minerals and liquid water.
This image was taken by the Surface Stereo Imager on Sol 103, the 103rd
day since landing (Sept. 8, 2008).
The trench is approximately 23 centimeters (9 inches) long.
The Phoenix Mission is led by the University of Arizona, Tucson, on behalf
of NASA. Project management of the mission is by JPL, Pasadena, Calif.
Spacecraft development was by Lockheed Martin Space Systems, Denver.
